[53a middle] R’ Assi quoting R’ Yochanan: Even placing or removing a stone which benefits a land is considered a proprietary act.

Prac-T-cal Tidbits: Each and every little thing we do can have great impactful consequences. The significance of our actions is not necessarily defined by the amount of effort, time, or money involved. It is important to give proper focus, concentration, and energy into what we want to accomplish to produce the greatest good.